package com.online.studyonline.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.online.studyonline.pojo.Course;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import java.util.List;

@Mapper
public interface CourseMapper extends BaseMapper<Course> {
    @Select("select course_name from Course")
    List<String> getCourseName();
}
